/*

 * Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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import jdk.test.lib.Utils;

import jdk.test.lib.JDKToolFinder;

import jdk.test.lib.Platform;

import jdk.test.lib.cds.CDSOptions;

import jdk.test.lib.cds.CDSTestUtils;

import jdk.test.lib.process.ProcessTools;

import jdk.test.lib.process.OutputAnalyzer;

import java.io.File;

import java.text.SimpleDateFormat;

import java.util.ArrayList;

import java.util.Date;

/**

 * This is a test utility class for common AppCDS test functionality.

 *

 * Various methods use (String ...) for passing VM options. Note that the order

 * of the VM options are important in certain cases. Many methods take arguments like

 *

 *    (String prefix[], String suffix[], String... opts)

 *

 * Note that the order of the VM options is:

 *

 *    prefix + opts + suffix

 */

public class TestCommon extends CDSTestUtils {

    private static final String JSA_FILE_PREFIX = System.getProperty("user.dir") +

        File.separator + "appcds-";

    private static final SimpleDateFormat timeStampFormat =

        new SimpleDateFormat("HH'h'mm'm'ss's'SSS");

    private static final String timeoutFactor =

        System.getProperty("test.timeout.factor", "1.0");

    private static String currentArchiveName;

    // Call this method to start new archive with new unique name

    public static void startNewArchiveName() {

        deletePriorArchives();

        currentArchiveName = JSA_FILE_PREFIX +

            timeStampFormat.format(new Date()) + ".jsa";

    }

    // Call this method to get current archive name

    public static String getCurrentArchiveName() {

        return currentArchiveName;

    }

    // Attempt to clean old archives to preserve space

    // Archives are large artifacts (20Mb or more), and much larger than

    // most other artifacts created in jtreg testing.

    // Therefore it is a good idea to clean the old archives when they are not needed.

    // In most cases the deletion attempt will succeed; on rare occasion the

    // delete operation will fail since the system or VM process still holds a handle

    // to the file; in such cases the File.delete() operation will silently fail, w/o

    // throwing an exception, thus allowing testing to continue.

    public static void deletePriorArchives() {

        File dir = new File(System.getProperty("user.dir"));

        String files[] = dir.list();

        for (String name : files) {

            if (name.startsWith("appcds-") && name.endsWith(".jsa")) {

                if (!(new File(dir, name)).delete())

                    System.out.println("deletePriorArchives(): delete failed for file " + name);

            }

        }

    }

    // Create AppCDS archive using most common args - convenience method

    // Legacy name preserved for compatibility

    public static OutputAnalyzer dump(String appJar, String appClasses[],

                                               String... suffix) throws Exception {

        return createArchive(appJar, appClasses, suffix);

    }

    // Create AppCDS archive using most common args - convenience method

    public static OutputAnalyzer createArchive(String appJar, String appClasses[],

                                               String... suffix) throws Exception {

        AppCDSOptions opts = (new AppCDSOptions()).setAppJar(appJar)

            .setAppClasses(appClasses);

        opts.addSuffix(suffix);

        return createArchive(opts);

    }

    // Create AppCDS archive using appcds options

    public static OutputAnalyzer createArchive(AppCDSOptions opts)

        throws Exception {

        ArrayList<String> cmd = new ArrayList<String>();

        File classList = makeClassList(opts.appClasses);

        startNewArchiveName();

        for (String p : opts.prefix) cmd.add(p);

        if (opts.appJar != null) {

            cmd.add("-cp");

            cmd.add(opts.appJar);

        } else {

            cmd.add("-cp");

            cmd.add("\"\"");

        }

        cmd.add("-Xshare:dump");

        cmd.add("-Xlog:cds,cds+hashtables");

        cmd.add("-XX:+UseAppCDS");

        cmd.add("-XX:ExtraSharedClassListFile=" + classList.getPath());

        if (opts.archiveName == null)

            opts.archiveName = getCurrentArchiveName();

        cmd.add("-XX:SharedArchiveFile=" + opts.archiveName);

        for (String s : opts.suffix) cmd.add(s);

        String[] cmdLine = cmd.toArray(new String[cmd.size()]);

        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true, cmdLine);

        return executeAndLog(pb, "dump");

    }

    // Execute JVM using AppCDS archive with specified AppCDSOptions

    public static OutputAnalyzer runWithArchive(AppCDSOptions opts)

        throws Exception {

        ArrayList<String> cmd = new ArrayList<String>();

        for (String p : opts.prefix) cmd.add(p);

        cmd.add("-Xshare:" + opts.xShareMode);

        cmd.add("-XX:+UseAppCDS");

        cmd.add("-showversion");

        cmd.add("-XX:SharedArchiveFile=" + getCurrentArchiveName());

        cmd.add("-Dtest.timeout.factor=" + timeoutFactor);

        if (opts.appJar != null) {

            cmd.add("-cp");

            cmd.add(opts.appJar);

        }

        for (String s : opts.suffix) cmd.add(s);

        String[] cmdLine = cmd.toArray(new String[cmd.size()]);

        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true, cmdLine);

        return executeAndLog(pb, "exec");

    }

    public static OutputAnalyzer execCommon(String... suffix) throws Exception {

        AppCDSOptions opts = (new AppCDSOptions());

        opts.addSuffix(suffix);

        return runWithArchive(opts);

    }

    public static OutputAnalyzer exec(String appJar, String... suffix) throws Exception {

        AppCDSOptions opts = (new AppCDSOptions()).setAppJar(appJar);

        opts.addSuffix(suffix);

        return runWithArchive(opts);

    }

    public static OutputAnalyzer execAuto(String... suffix) throws Exception {

        AppCDSOptions opts = (new AppCDSOptions());

        opts.addSuffix(suffix).setXShareMode("auto");

        return runWithArchive(opts);

    }

    public static OutputAnalyzer execOff(String... suffix) throws Exception {

        AppCDSOptions opts = (new AppCDSOptions());

        opts.addSuffix(suffix).setXShareMode("off");

        return runWithArchive(opts);

    }

    public static OutputAnalyzer execModule(String prefix[], String upgrademodulepath, String modulepath,

                                            String mid, String... testClassArgs)

        throws Exception {

        AppCDSOptions opts = (new AppCDSOptions());

        opts.addPrefix(prefix);

        if (upgrademodulepath == null) {

            opts.addSuffix("-p", modulepath, "-m", mid);

        } else {

            opts.addSuffix("--upgrade-module-path", upgrademodulepath,

                           "-p", modulepath, "-m", mid);

        }

        opts.addSuffix(testClassArgs);

        return runWithArchive(opts);

    }

    // A common operation: dump, then check results

    public static OutputAnalyzer testDump(String appJar, String appClasses[],

                                          String... suffix) throws Exception {

        OutputAnalyzer output = dump(appJar, appClasses, suffix);

        output.shouldContain("Loading classes to share");

        output.shouldHaveExitValue(0);

        return output;

    }

    /**

     * Simple test -- dump and execute appJar with the given appClasses in classlist.

     */

    public static OutputAnalyzer test(String appJar, String appClasses[], String... args)

        throws Exception {

        testDump(appJar, appClasses);

        OutputAnalyzer output = exec(appJar, args);

        return checkExec(output);

    }

    public static OutputAnalyzer checkExecReturn(OutputAnalyzer output, int ret,

                           boolean checkContain, String... matches) throws Exception {

        try {

            for (String s : matches) {

                if (checkContain) {

                    output.shouldContain(s);

                } else {

                    output.shouldNotContain(s);

                }

            }

            output.shouldHaveExitValue(ret);

        } catch (Exception e) {

            checkCommonExecExceptions(output, e);

        }

        return output;

    }

    // Convenience concatenation utils

    public static String[] list(String ...args) {

        return args;

    }

    public static String[] list(String arg, int count) {

        ArrayList<String> stringList = new ArrayList<String>();

        for (int i = 0; i < count; i++) {

            stringList.add(arg);

        }

        String outputArray[] = stringList.toArray(new String[stringList.size()]);

        return outputArray;

    }

    public static String[] concat(String... args) {

        return list(args);

    }

    public static String[] concat(String prefix[], String... extra) {

        ArrayList<String> list = new ArrayList<String>();

        for (String s : prefix) {

            list.add(s);

        }

        for (String s : extra) {

            list.add(s);

        }

        return list.toArray(new String[list.size()]);

    }

    // ===================== Concatenate paths

    public static String concatPaths(String... paths) {

        String prefix = "";

        String s = "";

        for (String p : paths) {

            s += prefix;

            s += p;

            prefix = File.pathSeparator;

        }

        return s;

    }

    public static String getTestJar(String jar) {

        File jarFile = CDSTestUtils.getTestArtifact(jar, true);

        if (!jarFile.isFile()) {

            throw new RuntimeException("Not a regular file: " + jarFile.getPath());

        }

        return jarFile.getPath();

    }

    public static String getTestDir(String d) {

        File dirFile = CDSTestUtils.getTestArtifact(d, true);

        if (!dirFile.isDirectory()) {

            throw new RuntimeException("Not a directory: " + dirFile.getPath());

        }

        return dirFile.getPath();

    }

    // Returns true if custom loader is supported, based on a platform.

    // Custom loader AppCDS is only supported for Linux-x64 and Solaris.

    public static boolean isCustomLoaderSupported() {

        boolean isLinux = Platform.isLinux();

        boolean isX64 = Platform.isX64();

        boolean isSolaris = Platform.isSolaris();

        System.out.println("isCustomLoaderSupported: isX64 = " + isX64);

        System.out.println("isCustomLoaderSupported: isLinux = " + isLinux);

        System.out.println("isCustomLoaderSupported: isSolaris = " + isSolaris);

        return ((isX64 && isLinux) || isSolaris);

    }

}